Hair-sieve guard for the head of an electric razor



July 2, 1957 A. AFFOLTER 7 2,797,480

HAIR-SIEVE GUARD FOR THE HEAD OF AN ELECTRIC RAZOR Filed Aug. 16, 1954 ATT- ow A/E ys United HAIR SlEVE GUARD FOR THE HEAD 6F AN ELECTRIC RAZOR Claims priority, application Switzerland September 3, 1953 1 Claim. (Cl. 30-43) The present invention relates to improvements in shaving implements for dry shavers and is particularly directed to a novel and improved shear plate for the head of a dry shaver, which plate provides means for cutting both long and short hairs.

A primary object of this invention is to provide a shear plate which has a rigid frame that has channeled shaped, outstanding side portions having slits to define teeth for cutting long hairs and which has a perforated arcuate member for cutting short hairs and finishing the hair, the arcuate member being supported and rigidified by the frame that is provided with a rigid base plate underlying the arcuate member.

Thus, the shear plate comprises two part-s, one of which is a frame that has opposing arcuate end edges and opposing side edges, which are connected by a base plate, the frame being formed from thick and rigid sheet metal. The other part is formed from thinner and less rigid sheet metal and is in the form of an arcuate strip having a plurality of apertures.

The shear plate is formed from the two parts in an economical and effective manner. In this respect, the strip can be cut from a long band which can be economically apertured in a continuous fashion. The strip is electrically welded at certain points to the inner surface of the frame. The relative thicknesses of the strip and the frame are of importance and the two piece construction of the shear plate is important from such standpoint as well as from the standpoint of economy.

The accompanying drawing illustrates, by way of example, a preferred embodiment of the shear plate and wherein;

Figure 1 is an elevational view of the shear plate;

Figure 2 is a view taken from the bottom side, partly in section, along the line II-II of Figure 1;

Figure 3 is a cross-sectional view taken on line III-III of Figure 1, and

Figure 4 is an enlarged sectional view of the side edge of the plate as indicated by the arrow IV in Figure 3.

Referring now more particularly to the drawing, the shear plate for the head of an electric razor comprises a rigid base plate 1 formed from relatively thick steel s Patent sheet metal. The base plate 1 is fiat and rectangular in shape and has upstanding parallel flanges 2 formed on its opposing side edges.

The shear plate further comprises a frame 3 which is formed from somewhat thinnner sheet metal than the plate 1 and is electrically welded to the flanges 2. The frame 3 is open and has arcuate end bars connected by side portions 6 which are channel shaped in cross section and are provided with a plurality of spaced apart slits that are parallel to the end bars. The slits define teeth and are used for the cutting of long hairs.

The shear plate further includes a thin arcuate member 4 which is formed from very thin sheet metal. The member 4 is formed from a strip which has an extremely small thickness of approximately min. The member 4 is formed with perforations and is used for finishing the hair. The longitudinal margins 4a of the member 4 are electrically welded at spaced points to the inner surface of the side edges of the frame. In order to prevent the margins from being burned, when they are being welded, a narrow strip 7 of sheet metal is laid over the margins and welded thereto at the same time the margins are welded to the frame.

The part 3 and the member 4 constitute an arcuate portion 5 which is adapted to be used with a multiknife cutter alternatingly reciprocating in the longitudinal direction thereof. At the summit of the arcuate portion 5, a play or clearance of some or mm. is provided between the ends of the frame and the juxtaposed marginal end edges of the member 4. The play or clearance permits the member 4 to conform its shape exactly to the shape of the cutter.

What I claim is:

A shear plate for the head of a dry shaver comprising an arcuate perforated member having opposing arcuate end edges and opposing side edges, a frame having arcuate, spaced apart, end bars overlying the end edges of the member and to which the end edge-s are partly connected, said frame including side portions extending along the outside of the side edges of the arcuate member and outstanding therefrom and connecting the end bars and being substantially channel shaped in crosssection and provided with a plurality of spaced apart slits which extend parallel to the end bars, said side portions of the frame having flanges and a rectangular base plate having opposing side edges provided with upstanding flanges, said flanges on the side portions of the frame being welded to the insides of the flanges on the base plate.

References Cited in the file of this patent UNITED STATES PATENTS 

